Jack Mawhinney, Designer in Hamilton, Bermuda
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Jack Mawhinney

Verified Expert  in Design


Hamilton, Bermuda
Toptal Member Since
November 25, 2021

Jack is an end-to-end product designer from London with a strong background in UX and product strategy. His experience is predominantly in fintech and eCommerce, where he's delivered large-scale projects for brands such as HSBC and Harrods. More recently, he's worked in Hong Kong, helping several startups get off the ground. Jack also specializes in scaling design teams, advocating best practices, and taking part in many mentoring initiatives outside of work.


Work Experience

Senior Product Designer

2022 - PRESENT
  • Created and managed the PepsiCo design system, as a senior product designer.
  • User researched contextual inquiry and researched presentations to senior stakeholders to inform product strategy.
  • Planned roadmaps and prioritized features with product leaders.
Technologies: Data Visualization, Dashboards, Dashboard Design, Web App Design, Responsive Web Design (RWD), UX Design, UI Design, Product Design, Ideation, UX Research, Mobile Apps, User Testing, Design Systems, Figma, Adobe Experience Design (XD), InVision, Analytical Dashboards, B2B

Senior Product Designer

2021 - 2021
Rush Hour Digital
  • Built frameworks, design experience ecosystems, and distinct brand visual identities for startup clients within the fintech space and education sector while working as an interim design lead (maternity cover).
  • Designed a collaborative digital workspace for the Agency for French Education Abroad (AEFE) to allow French international school students to participate in remote exchange projects with other classes from all over the globe.
  • Redefined the design services offered so that the business could charge higher prices for its projects by monetizing discovery research and opening up a consultancy arm of the company.
Technologies: Figma, Sketch, After Effects CC

UX Designer

2019 - 2021
  • Designed new features to help drive growth for Hong Kong’s favorite digital wallet.
  • Created an in-app loyalty program to enhance and strengthen the PayMe ecosystem.
  • Headed the research and design for PayMe’s most requested feature, Split Bill.
  • Ran regular workshops with senior stakeholders to help define the product roadmap based on customer insights.
  • Tested and learned by rapidly producing multiple concepts and prototypes, knowing when to apply pixel-perfect attention to detail, and when to make low-fi sketches and prototypes.
Technologies: Figma, Sketch, B2B

UX Designer

2017 - 2019
  • Worked on a range of key strategic projects and quick test-and-learn conversion optimizations across the whole customer experience.
  • Promoted the discipline across the business, mentored creatives, and grew the department to a team of four by demonstrating value to senior stakeholders as Harrod’s first UX design hire.
  • Led A/B and usability programs by setting up a testing lab within the Harrods store to enable the design team to conduct regular testing sessions on a new design and the existing features and assess product categories performing poorly online.
Technologies: Sketch, Adobe After Effects, Photoshop 7

Product Designer

2017 - 2017
  • Facilitated workshops with key stakeholders and customers to deliver a detailed report on the buying journey and customer empathy maps evaluating the process for schools to acquire and onboard new special educational needs products.
  • Delivered a complete redesign of Filisia’s website to increase orders for their flagship product, Cosmo.
  • Created a product roadmap to drive customer acquisition for the Cosmo product.
Technologies: Sketch

UX/UI Consultant

2015 - 2016
  • Managed key accounts across the technology, finance, and retail spaces.
  • Helped grow the digital services offering and team.
  • Helped scale design teams for many startups in London.
Technologies: Microsoft
2011 - 2014

Bachelor's Degree in Psychology

Nottingham Trent University - Nottingham, UK


Diploma in Digital Marketing

Chartered Institute of Marketing


Figma, Sketch, Lightroom CC, Adobe Analytics, Treejack, Adobe After Effects, Photoshop 7, After Effects CC, Adobe Experience Design (XD), InVision


Microsoft, Mobile, Android, iOS, WordPress

Industry Expertise

Retail & Wholesale, Fashion


B2C Marketing, UX Research, Product Roadmaps, User Interface (UI), Design Workshops, Ideation Workshops, Agile Sprints, User Experience (UX), Feature Prioritization, Usability Testing, Discovery Workshops, Product Strategy, UX Roadmaps, eCommerce UI, Mobile UI, Mobile UX, Information Architecture (IA), Card Sorting, User Flows, Empathy Mapping, Responsive UI, Live Chat, Design Systems, Fintech, Finance, Financial UX, Financial Design, Lean Startups, Scaling, Lean UX, Minimum Viable Product (MVP), Luxury, Feature Roadmaps, Digital Filters, Luxury Retail, Fashion Design, Conversion Rate Optimization (CRO), Guerilla Usability Testing, UX Testing, UI Affordances, UI Audits, UX Audits, eCommerce UX, Platforms, Redesign, Tree Testing, Internationalization, International Data Privacy Regulations, Global, Global Business, Trade Finance, Higher Education, Edtech Design, Collaboration, Cross-functional Collaboration, Cross-functional Team Leadership, Entity Relationships, Functional Design, Risk Management, Wireframing, Stakeholder Management, Client Guides, Client Success, UX Design, Web Design, Responsive Web Design (RWD), Responsive Design, Apps, Product Design, User Journeys, User Journey Maps, Experience Maps, Whiteboarding, Sitemaps, UI Design, Digital Product Design, Agile, Leadership, Mobile Design, Design Leadership, Design Thinking, Stakeholder Interviews, Workshops, Business, Data Visualization, User Research, Visual Design, UX Review, eCommerce, eCommerce Design, Rebranding, B2B, Cognitive Psychology, Indonesia, Localization, Localization Testing, Accounts, Invoices, Trade, Digital Transformation, Dashboards, Dashboard Design, Web App Design, Ideation, Mobile Apps, User Testing, Analytical Dashboards

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